Indicator-lock



(ModeL) 2 Sheets-Sheet I. W. H. KING.

INDICATOR LOOK.

No. 417,326. Patented Dec. 17, 1889 N. PETERS. vhewunw mr. wum mmmmmm c2 Sheets-Sheet 2.

(MO'deL) H. KING. INDIOATOR LOCK.

Patented Dec. 17, 1889.

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N. PETERS. Phnln-Lilhngmphcn Washington. D. a

UNITED STATES PATENT OFFICE.

WILLIAM ll. KING, OF NElVARK, NEW JERSEY.

INDICATOR-LOCK.

SPECIFICATION forming part of Letters Patent No. 417,326, dated December17, 1889.

Application filed October 9, 1889- Sena-1N0. 326,?72. (Model) To allwhom it may concern:

Be it known that I, \VILLIAM H. KING, of

door-latches, and particularly to such as are calculated to indicate thecondition of the latch from the outside, whether it be open or closed,or, in other words, unlocked or locked; and the object is to provide ameans for indi cating from the outside of a door whether it is locked orunlocked, and, furthermore, to provide means whereby the latch maybefastened from the inside and the indicator may be set simultaneouslytherewith to designate the locked or unlocked condition of thelatch.

A further object is to provide means for locking the door from eitherside and for looking it from. the inside only in such manner that itcannot be unfastened from without.

lVith these ends in View my invention consists in certain novel featuresof construction and combinations of parts, as will be hereinafter fullydescribed, and pointed out in the claims.

In the accompanying drawings, Figure 1 is a View of a portion of thedoor from the outside. Fig. 2 is a similar view from the inside. Fig. 3is a sectional vicw through the knobs and spindle. Fig. lis a view fromthe inside with the knob removed, and Fig: 5 is a detached view of thespindle.

A represents a lock, which may be of ordinary or special construction.This lock is sooured inside the door in the usual manner, and isfurnished with the springactuated latch 1 and the slide-bolt 2, asshown, the former being controlled by the knobs and spindle and thelatter bya suitable key, after the accustomed manner.

The latch is controlledthat is, withdrawn from the keeper-by turning thespindle 3 on its axis. Said spindle is angular, preferably square, andfitted to the rocking post 4, which engages the latch and counteractsthe action. of the spring, which normally forces it outward. The outsideknob5 and the inside knob 6 are secured on the ends of the spindleadjacent, respectively, to the door 7 and the look A, and by means ofthem the spindle is rocked and the latch moved. These knobs may be ofmost any construction and material; but they are preferably stamped andstruck up from sheet metal, so as to be hollow and light, and theoutside knob 5 is furnished with an opening 8, through which the wordsOpen and Closed on a disk 9 within may be seen and easily read from theoutside when the latch is unfastened or fastened. This disk is turned bymeans of a small button 10, loosely mounted in the inside knob. Saidbutton is milled or otherwise roughened to facilitate its operation, anda small shaft 11 extends loosely through the spindle and is providedwith the angular heads 12 12 on its ends. One of these heads is fittedin a socket 13, formed in the rearof the indicator-disk, and the otherin a socket 14, formed for it in the button 10. Stops 15 15 are arrangedinside of the knob 6, to limit and define the turns of the button, sothat it is only necessary for the operator to turn the button in onedirection until it stops to change the word from that displayed throughthe opening when turned to the other extreme. All of this is doneindependently of the knobs; and still another feature of my inventionconsists in looking the knobs to the lock, or at any rate securing themin some effectual manner, so that the latch cannotbe moved from theoutside. This locking is done simultaneously with the shifting of theindicating-disk and by the same means in the following manner:

A pair of pins 16 16 are loosely supported in the shank 17 of the insideknob 6 on opposite sides of the spindle. These engage a cam formed onthe shank of the button 10, whereby they are drawn in or forced out. Bya turn in one direction they are forced outward, so that they protrudesufficiently to enter the recesses 17 '17, formedfor them-half in theloosely-mounted post 4 and half in the lock Aand lock the latch andknobs, and at the same time display the word Closed at the opening inthe outside knob 5. By the opposite turn. of the button 10 the pins 1616 are removed from the recesses 17 17 and the word Open is disclosed.Thus the latch may be secured from the inside at any time, so that it isimpossible to open the door from the outside, either by the knobs or bymeans of a key, and thus, also, is the indicator changed to indicate thecondition of the latch.

It is evident that slight changes might be resorted to in the form andarrangement of the several parts described without departing from thespirit and scope of my invention, and hence I do not wish to limitmyself to the particular construction herein set forth; but,

Having fully described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. The combination, with a lock-spindle and knobs and an indicator-diskin one of said knobs, of locking d'evicesfor locking the spindle againstmovement, and means for turning the disk and simultaneously looking orunlocking the spindle, substantially as set forth.

2. The combination, with a pair of knobs, and spindle upon the ends ofwhich the knobs are secured, of an indicator in one of the knobs and abutton in the other, having connection with the indicator, whereby thelatteris turned, substantially as set forth.

3. The combination, with a pair of knobs, a spindle, and a latch, of anindicator-disk in one of the knobs, a button in the other, a shaftconnecting the two, pins in the shank of one of the knobs adapted tolock or unlock the latch, and means for operating the pins,substantially as set forth.

. 4. The combination, with a lock having a latch therein and a pivotedpost upon which the latch is mounted, of a spindle fitted in the post,knobs on the ends of the spindle, an indicator-disk in one knob, abutton in the other, a shaft connecting said disk and button, pinsadapted to enter recesses in the lock and post for fastening the latch,and mechanism for operating said pins simultaneously with the changingof the indicator, substantially as set forth.

5. The combination, with a lock having a pivoted spring-actuated latchand a pivoted post therein, of a spindle extending through the post, apair of knobs on the ends of the spindle, one of the knobs beingslot-ted and having an indicator-disk therein and the other having abutton, a shaft extending loosely through the spindle and having angularends which fit sockets in the disk and button, sliding pins in the shankof the inner knob adapted to enter recesses formed partly in the lockand post, and cam mechanism whereby the pins and disk are simultaneouslyoperated by turning the button, substantially as set forth.

In testimony whereof I have signed this specification in the presence oftwo subscribing witnesses WILLIAM H. KING.

Witnesses: I

ABRAHAM MANNEns, ELLIOTT A. ARCHER.

